2016/09/28 by Stephan Endres, Endres, Stephan, Hendrik van Hees +3
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Nuclear Theory (nucl-th) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph #nucl-th
paper · pdf · doi:10.48550/arxiv.1609.09140
5 pages, 2 figures. Contribution for the proceedings of the 10th International Conference on Critical Point and Onset of Deconfinement (CPOD 2016)
arxiv created 2016/09/28 · openalex publication_date 2016/09/28 · arxiv updated 2016/09/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Dilepton production in heavy-ion collisions at various energies is studied using coarse-grained transport simulations. Microscopic output from the Ultra-relativistic Quantum Molecular Dynamics (UrQMD) model is hereby put on a grid of space-time cells which allows to extract the local temperature and chemical potential in each cell via an equation of state. The dilepton emission is then calculated applying in-medium spectral functions from hadronic many-body theory and partonic production rates based on lattice calculations. The comparison of the resulting spectra with experimental data shows that the dilepton excess beyond the decay contributions from a hadronic cocktail reflects the trajectory of the fireball in the T-μB plane of the QCD phase diagram.